Create an algebraic expression, such that when substituting 0, the outcome is -1, and when substituting -1, the outcome is 0.
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y = -x - 1.

Step-by-step explanation:

y = -x - 1 would fit the bill.

If x = 0, y = -1.

If x =-1 y = -(-1) - 1 = 1 -1 = 0.

step-by-step explanation:

if you meant, "on the way from (3, 2) to (3, 14):

x does not change; y increases by 12.

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